Low-noise vibration connecting structure
By setting up a shock absorber between the motor case and the stator assembly sheet, the damping of the radial force wave is increased, the motor vibration and noise problems are solved, and the motor noise reduction effect is achieved.
Patent Information
- Application Number
- CN202422235869.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-12
AI Technical Summary
When existing motors are running, due to the vibration and noise problems of radial force waves, the noise is high and there is a lack of effective vibration-absorbing devices.
A shock absorbing gasket is provided between the motor housing and the stator assembly sheet, and the damping of the radial force wave is increased and the energy it transmits to the motor housing is reduced.
By increasing damping, the noise of the motor case is effectively reduced and the noise reduction effect of the motor vibration connection structure is improved.
Smart Images
Figure CN223066924U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor noise reduction, in particular to a low-noise vibration connection structure. Background Technique
[0002] The motor is the main power device on the water pump. By driving the rotation of the impeller on the water pump through the motor, the liquid can be transported by the water pump. When the existing motor is running, there are a series of magnetic fields with different pole numbers, different speeds, and different sizes in the air gap. This series of air-gap harmonic magnetic fields are excited by the rotor excitation, stator current alone or jointly, and are generated through the modulation of the air-gap magnetic conductance wave. Where there is a magnetic field, Maxwell force will be generated on the stator and rotor surfaces. This force can be decomposed into two components: radial and tangential. When the motor is unloaded, the air-gap magnetic field is only excited by the rotor excitation current or permanent magnet, and the Maxwell force only has a radial component, and the tangential component is 0. When the motor is loaded, the air-gap magnetic field is jointly excited by the stator and rotor magnetomotive forces, and both radial and tangential components exist. Among them, the tangential component generates electromagnetic torque and torque ripple, and the radial component is a series of traveling waves distributed in a certain spatial waveform along the air-gap circumference and rotating, so it is also called the radial force wave. That is, when the motor is running, the radial force wave is alternating with time and space, thus causing the vibration and noise of the motor. From the perspective of magnitude, the radial component is much larger than the tangential component. Therefore, the radial force wave is the main excitation source of the motor vibration noise. At present, there is no device on the motor to reduce the vibration generated by the radial force wave, resulting in a relatively large noise of the motor. Therefore, a structure that can reduce the vibration generated by the radial force wave is needed. Content of the Utility Model
[0003] To solve the above technical problems, the utility model provides a low-noise vibration connection structure that increases the damping of the radial force wave during the transmission process, reduces the energy of the radial force wave transmitted to the motor housing, and reduces the noise of the motor housing during operation.
[0004] The low-noise vibration connection structure of the utility model includes a motor housing and a stator assembly sheet; it also includes a shock-absorbing gasket. The stator assembly sheet is installed in the motor housing. There is a notch on the stator assembly sheet. The shock-absorbing gasket is installed in the notch of the stator assembly sheet. One side of the shock-absorbing gasket is in contact with the stator assembly sheet, and the other side of the shock-absorbing gasket is in contact with the motor housing; the inner side of the shock-absorbing gasket is in contact with the notch of the stator assembly sheet, and the outer side of the shock-absorbing gasket is in contact with the motor housing. When the stator assembly sheet is pressed into the motor housing, the shock-absorbing gasket fills the notch on the stator assembly sheet; when the motor is running, the radial force wave on the stator assembly sheet is transmitted to the motor housing through the shock-absorbing gasket. By the shock-absorbing gasket, the damping of the radial force wave during the transmission process is increased, the energy of the radial force wave transmitted to the motor housing is reduced, and the noise of the motor housing during operation is reduced.
[0005] Preferably, a clearance fit is provided between the motor housing and the stator assembly sheet.
[0006] Preferably, the height of the stator assembly sheet is greater than 20 mm. Both the upper and lower parts of the stator assembly sheet are provided with notches. The number of the shock-absorbing washers is two, and the two shock-absorbing washers are respectively installed in the notches of the upper and lower parts of the stator assembly sheet. Through the above settings, when the height of the stator assembly sheet is relatively high, two notches are provided on the stator assembly sheet, and two shock-absorbing washers are provided, ensuring the effect of reducing the radial force wave and the effect of noise reduction.
[0007] Preferably, the height of the stator assembly sheet is less than 20 mm. A notch is provided in the middle of the stator assembly sheet. The number of the shock-absorbing washers is one, and the shock-absorbing washer is installed in the notch of the stator assembly sheet. By providing a notch in the middle of the stator assembly sheet and a shock-absorbing washer in the middle of the stator assembly sheet, the uniformity of blocking the radial force wave generated by the stator assembly sheet is ensured, and the reliability is improved.
[0008] Preferably, the material of the stator assembly sheet is silicon steel. Through the above settings, the reliability of the stator assembly sheet during use is ensured.
[0009] Preferably, the gap between the stator assembly sheet and the inner side wall of the motor housing is 0.15 mm to 0.25 mm.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the damping of the radial force wave during transmission is increased, the energy of the radial force wave transmitted to the motor housing is reduced, and the noise of the motor housing during operation is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a schematic structural view of the present invention when the height of the stator assembly sheet is less than 20 mm;
[0012] Figure 2 is a schematic structural view of the present invention when the height of the stator assembly sheet is greater than 20 mm;
[0013] Figure 3 is a schematic structural view of the shock-absorbing washer.
[0014] Reference numerals in the drawings: 1, motor housing; 2, stator assembly sheet; 3, shock-absorbing washer. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention is thorough and complete.
[0016] Embodiment
[0017] As Figures 1 to 3 , a low-noise vibration connection mechanism of the present utility model includes a motor housing 1, a stator assembly sheet 2, and a shock-absorbing washer 3. The stator assembly sheet 2 is installed inside the motor housing 1. A notch is provided on the stator assembly sheet 2. The shock-absorbing washer 3 is installed in the notch of the stator assembly sheet 2. One side of the shock-absorbing washer 3 contacts the stator assembly sheet 2, and the other side of the shock-absorbing washer 3 contacts the motor housing 1; the inner side of the shock-absorbing washer 3 contacts the notch of the stator assembly sheet 2, and the outer side of the shock-absorbing washer 3 contacts the motor housing 1. After the stator assembly sheet 2 is pressed into the motor housing 1, the shock-absorbing washer 3 fills the notch on the stator assembly sheet 2; when the motor is running, the radial force wave on the stator assembly sheet 2 is transmitted to the motor housing 1 through the shock-absorbing washer 3. The shock-absorbing washer 3 increases the damping during the transmission of the radial force wave, reduces the energy of the radial force wave transmitted to the motor housing 1, and reduces the noise of the motor housing 1 during operation.
[0018] A clearance fit is provided between the motor housing 1 and the stator assembly sheet 2. The clearance between the stator assembly sheet 2 and the inner side wall of the motor housing 1 is 0.15 mm to 0.25 mm. The material of the stator assembly sheet 2 is silicon steel.
[0019] As Figure 2 , when the height of the stator assembly sheet 2 is greater than 20 mm, notches are provided on both the upper and lower parts of the stator assembly sheet 2. The number of the shock-absorbing washers 3 is two, and the two shock-absorbing washers 3 are respectively installed in the notches on the upper and lower parts of the stator assembly sheet 2; through the above settings, when the height of the stator assembly sheet 2 is relatively high, two notches are provided on the stator assembly sheet 2, and two shock-absorbing washers 3 are provided, ensuring the effect of reducing the radial force wave and the noise reduction effect.
[0020] As Figure 1 , when the height of the stator assembly sheet 2 is less than 20 mm, a notch is provided in the middle of the stator assembly sheet 2. The number of the shock-absorbing washers 3 is one, and the shock-absorbing washer 3 is installed in the notch of the stator assembly sheet 2; by providing a notch in the middle of the stator assembly sheet 2 and a shock-absorbing washer 3 in the middle of the stator assembly sheet 2, the uniformity of blocking the radial force wave generated on the stator assembly sheet 2 is ensured, and the reliability is improved.
[0021] The motor housing 1, the stator assembly sheet 2, and the shock-absorbing washer 3 of the low-noise vibration connection structure of the present utility model are all purchased on the market. Those skilled in the art only need to install and operate according to the attached user manual, without the need for creative labor by those skilled in the art.
[0022] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
Claims
1. A low-noise vibration connection structure, comprising a motor housing (1) and a stator assembly piece (2); characterized in that, It further includes a shock-absorbing washer (3). The stator assembly sheet (2) is installed in the motor housing (1). The stator assembly sheet (2) is provided with notches. The shock-absorbing washer (3) is installed in the notches of the stator assembly sheet (2). One side of the shock-absorbing washer (3) is in contact with the stator assembly sheet (2), and the other side of the shock-absorbing washer (3) is in contact with the motor housing (1).
2. The low-noise vibration connection structure according to claim 1, characterized in that, A clearance fit is provided between the motor housing (1) and the stator assembly sheet (2).
3. A low-noise vibration connection structure according to claim 1, characterized in that, The height of the stator assembly sheet (2) is greater than 20 mm. Notches are provided in both the upper and lower parts of the stator assembly sheet (2). The number of the shock-absorbing washers (3) is two, and the two shock-absorbing washers (3) are respectively installed in the notches of the upper and lower parts of the stator assembly sheet (2).
4. A low-noise vibration connection structure according to claim 1, characterized in that, The height of the stator assembly sheet (2) is less than 20 mm. A notch is provided in the middle of the stator assembly sheet (2). The number of the shock-absorbing washers (3) is one, and the shock-absorbing washer (3) is installed in the notch of the stator assembly sheet (2).
5. The low-noise vibration connection structure according to claim 1, wherein, The material of the stator assembly sheet (2) is silicon steel.
6. The low-noise vibration connection structure according to claim 2, characterized in that, The clearance between the stator assembly sheet (2) and the inner side wall of the motor housing (1) is 0.15 mm to 0.25 mm.